.main {
  background-color: #eeeeee;
  padding-top: 160px;
  padding-bottom: 100px;
}

.main h2 {
  display: block;
  text-align: center;
  font-size: 40px;
  font-weight: 500;
  margin-bottom: 70px;
}

.demoBox img {
  width: 45%;
  display: inline-block;
  margin-left: 3%;
  margin-bottom: 50px;
  visibility: visible;
  transition: all .5s;
}

.demoBox div {
  width: 45%;
  height: 200px;
  background-color: rgb(14, 28, 47);
  border-radius: 4px;
  color: #fff;
  text-align: center;
  padding-top: 80px;
  font-size: 23px;
  box-shadow: 0 7px 14px 0 #999, 0 3px 6px 0 #999;
  display: inline-block;
  margin-left: 3%;
  margin-bottom: 50px;
  visibility: visible;
  transition: all .5s;
}

.demoBox div:hover {
  cursor: pointer;
  text-decoration: #fff;
}
